remove duplicate test (apache#15385)

Author: goldmedal

datafusion/sql/tests/cases/plan_to_sql.rs

@@ -642,12 +642,6 @@ fn roundtrip_statement_with_dialect() -> Result<()> {
             parser_dialect: Box::new(GenericDialect {}),
             unparser_dialect: Box::new(CustomDialectBuilder::default().with_unnest_as_table_factor(true).build()),
         },
-        TestStatementWithDialect {
-            sql: "SELECT unnest([1, 2, 3, 4]) from unnest([1, 2, 3]);",
-            expected: r#"SELECT UNNEST([1, 2, 3, 4]) AS UNNEST(make_array(Int64(1),Int64(2),Int64(3),Int64(4))) FROM UNNEST([1, 2, 3])"#,
-            parser_dialect: Box::new(GenericDialect {}),
-            unparser_dialect: Box::new(CustomDialectBuilder::default().with_unnest_as_table_factor(true).build()),
-        },
         TestStatementWithDialect {
             sql: "SELECT * FROM unnest_table u, UNNEST(u.array_col)",
             expected: r#"SELECT u.array_col, u.struct_col, "UNNEST(outer_ref(u.array_col))" FROM unnest_table AS u CROSS JOIN LATERAL (SELECT UNNEST(u.array_col) AS "UNNEST(outer_ref(u.array_col))")"#,